Security
CBC
Abbreviation for Cipher Block Chaining
In short and in plain language
CBC is a way of encrypting data in blocks.
Each block of data is linked to the one before it.
For encrypted links, it is now seen as less suitable than newer ways. A current server setup often turns it off.
Definition
CBC is an operating mode of block ciphers in which each block of data is linked to the previous one. In encrypted connections it is now regarded as less suitable than newer modes. A current server configuration often switches it off.